CN219651869U - Bridge removing device for storage tank - Google Patents

Abstract

This application discloses a bridge removal device for storage tanks, which includes: a bridge removal sleeve assembly, which is located in the storage tank and can move along the axial direction of the storage tank; and an air inlet, which is located in the storage tank. One end of the bridge removal sleeve assembly; an air inlet channel is provided in the bridge removal sleeve assembly, and one end is connected to the air inlet, and the other end is connected to the storage tank. When the bridge removal sleeve assembly is along the When the storage tank moves axially, the air inlet channel is used to pass gas into different height positions in the storage tank to loosen the powder located at different height positions in the storage tank. The device has a simple structure and improves the efficiency of tank removal and bridge erection.

Description

A bridge removal device for storage tanks

Technical field

The present application relates to the technical field of pulverized coal storage equipment, and specifically to a bridge removal device for storage tanks.

Background technique

At present, the high-pressure pulverized coal transportation system is one of the core processes of pulverized coal gasification technology, which mainly includes filters, low-pressure storage tanks, lock hoppers, feeding tanks, etc.

Among them, during the unloading process of storage tanks storing powders such as pulverized coal, powder bridging is prone to occur, which affects powder unloading and thus affects the overall operational stability of the system.

In the prior art, the general operation when bridging occurs in the pulverized coal lock hopper is as follows: first close the balance valve of the pulverized coal lock hopper and the feed tank, close the discharge valve of the pulverized coal lock hopper, and then open the inflatable cone in the pulverized coal lock hopper. Blow the air valve upward or open the pressure valve on the upper part of the pulverized coal lock hopper to press down. The above solution has poor bridge removal effect and cannot loosen the powder in the middle section of the lock hopper, thereby reducing the bridge removal efficiency. At the same time, the unloading of the pulverized coal lock hopper will be suspended during operation, affecting the normal operation of the pulverized coal conveying system.

To sum up, how to improve the efficiency of bridge removal without affecting the normal operation of the pulverized coal conveying system is an urgent problem that needs to be solved by those skilled in the art.

Utility model content

The purpose of this application is to provide a bridge removal device for storage tanks, which has a simple structure and can improve the efficiency of bridge removal without affecting the normal operation of the pulverized coal transportation system.

In order to achieve the above purpose, this application provides a bridge removal device for storage tanks, including:

A bridge removal sleeve assembly is located in the storage tank and can move along the axial direction of the storage tank;

An air inlet is provided at one end of the bridge removal sleeve assembly;

The air inlet channel is provided in the bridge removal sleeve assembly, and one end is connected to the air inlet, and the other end is connected to the storage tank. When the bridge removal sleeve assembly moves along the axial direction of the storage tank, The air inlet channel is used to pass gas into different height positions in the storage tank to loosen the powder located at different height positions in the storage tank.

Preferably, the bridge removal sleeve assembly includes:

An outer sleeve has one end located in the storage tank, extends along the axial direction of the storage tank to the bottom of the storage tank, and has a plurality of first through holes communicating with the storage tank;

The inner sleeve has one end located inside the outer sleeve and can move along the outer sleeve. It has a plurality of second through holes communicating with the outer sleeve. The first through holes, the second through holes and the second through holes are connected to the outer sleeve. The through hole and the inner wall of the inner sleeve form the air inlet channel.

Preferably, the air inlet is provided at one end of the inner sleeve located outside the storage tank.

Preferably, all the first through holes are evenly provided in the first preset section of the outer sleeve, and all the second through holes are evenly provided in the second preset section at the bottom of the inner sleeve, The inner sleeve drives the second preset section to move within the range of the first preset section.

Preferably, all the first through holes are evenly arranged along the circumferential wall and axial direction of the outer sleeve, and the diameter of the first through holes is 3-20 μm.

Preferably, all the second through holes are evenly arranged along the circumferential wall and axial direction of the inner sleeve, and the diameter of the second through holes is 1-3 mm.

Preferably, the bridge removal sleeve assembly further includes:

A sealed cavity is connected to one end of the outer sleeve located outside the storage tank and is sealingly connected to the inner sleeve. Inert gas is provided in the sealed cavity to prevent the powder from floating out.

Preferably, the bridge removal sleeve assembly further includes:

A driving member is connected to one end of the inner sleeve extending out from the outer sleeve, and is used to drive the inner sleeve to move along the outer sleeve.

Compared with the above background technology, this application adds a bridge removal sleeve assembly. The bridge removal sleeve assembly is located in the storage tank and can move up and down along the axis of the storage tank. It has an air inlet channel connected with the storage tank, and the gas passes through it. When the air inlet channel enters the storage tank, the powder in the storage tank can be loosened. At the same time, when the bridge removal sleeve assembly moves up and down, the air inlet channel also moves up and down, and the gas can pass into different positions in the storage tank. To loosen the powder located at different heights in the storage tank, making it easier for the bridge in the storage tank to fall. In this way, the device can improve the efficiency of bridge removal without affecting the normal operation of the pulverized coal conveying system.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only This is an embodiment of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a bridge removal device for storage tanks provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of the sealed cavity provided by the embodiment of the present application;

FIG. 3 is a schematic structural diagram of a second through hole provided by an embodiment of the present application.

in:

1-1 is the air inlet, 1-2 is the driving part, 1-3 is the inner sleeve, 1-4 is the second through hole, 2-1 is the sealing chamber, 2-2 is the outer sleeve, 2-3 is the first through hole, and 2-4 are sealed air inlets.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

This application provides a bridge removal device for storage tanks, which includes a bridge removal sleeve assembly, an air inlet 1-1 and an air inlet channel. Among them, the bridge removal sleeve assembly is located in the storage tank and can move along the axial direction of the storage tank; the air inlet 1-1 is located at one end of the bridge removal sleeve assembly; the air inlet channel is located in the bridge removal sleeve assembly. And one end is connected to the air inlet 1-1, and the other end is connected to the storage tank. When the bridge removal sleeve assembly moves along the axial direction of the storage tank, the air inlet channel is used to pass gas into different height positions in the storage tank to loosen Powders located at different heights in the storage tank.

During the unloading process of the above-mentioned storage tanks, powder bridging is prone to occur, thereby blocking the outlet of the storage tank, affecting the powder unloading, and thus affecting the overall operational stability of the system. Therefore, this application designed a removal method to solve this problem. bridge device.

When the bridge removal device is working, the gas enters the storage tank through the air inlet channel, which can loosen the powder in the storage tank. At the same time, when the bridge removal sleeve assembly moves up and down, the air inlet channel also moves up and down, and the gas can be passed in. At different positions in the storage tank, the powder at different heights in the storage tank is loosened, making it easier for the bridge in the storage tank to fall. In this way, the device can improve the efficiency of bridge removal without affecting the normal operation of the pulverized coal conveying system.

Based on the above embodiment, as a further preference, the bridge removal sleeve assembly includes an outer sleeve 2-2 and an inner sleeve 1-3. Among them, one end of the outer sleeve 2-2 is located in the storage tank and extends to the bottom of the storage tank along the axial direction of the storage tank. It has a plurality of first through holes 2-3 communicating with the storage tank; the inner sleeve 1- One end of 3 is located in the outer sleeve 2-2 and can move along the outer sleeve 2-2. It has a plurality of second through holes 1-4 and first through holes 2-3 communicating with the outer sleeve 2-2. , the second through hole 1-4 and the inner wall of the inner sleeve 1-3 form an air inlet channel.

Specifically, taking the orientation of Figure 1 as a reference, one end of the outer sleeve 2-2 is fixedly installed in the storage tank, and one end of the inner sleeve 1-3 can move up and down relative to the storage tank and the outer sleeve 2-2. The bottom ends of the outer sleeve 2-2 and the inner sleeve 1-3 are both sealed. During operation, the second through hole 1-4 on the inner sleeve 1-3 is aligned with the first through hole 2-3 on the outer sleeve 2-2, so that the water flowing into the inner sleeve 1-3 is The gas flows into the storage tank.

Of course, setting up a sleeve can also complete the bridge removal work, but because the sleeve is directly inserted into the powder, the through hole on the sleeve is in direct contact with the powder. The powder can easily block the through hole, making it impossible for gas to pass through. The through hole leads into the tank, resulting in poor bridge removal.

At the same time, since the bridge has a certain height, in order to achieve multi-directional disturbance, the embodiment of the present application is optimal.

On the basis of the above embodiment, as a further preference, the air inlet 1-1 is provided at one end of the inner sleeve 1-3 located outside the storage tank.

Of course, the specific location of the air inlet 1-1 is not limited in this article.

On the basis of the above embodiment, as a further preference, all the first through holes 2-3 are evenly provided in the first preset section of the outer sleeve 2-2, and all the second through holes 1-4 are evenly provided in the first preset section of the outer sleeve 2-2. The second preset section at the bottom of the inner sleeve 1-3 drives the second preset section to move within the range of the first preset section.

Specifically, the above-mentioned first preset section and second preset section refer to a certain section position on the outer sleeve 2-2 and the inner sleeve 1-3.

When the inner sleeve 1-3 moves up and down, the second preset section of the inner sleeve 1-3 is controlled to always repeat up and down within the first preset section of the outer sleeve 2-2 to ensure that the second through hole 1-4 can always face the first through hole 2-3, so that the gas can always flow into the storage through the air inlet 1-1, the air inlet channel, the second through hole 1-4 and the first through hole 2-3. inside the tank.

In addition, in order to ensure the bridge removal effect, the gas flow rate is controlled within 40-60m/s.

On the basis of the above embodiment, as a further preference, all first through holes 2-3 are evenly arranged along the circumferential wall and axial direction of the outer sleeve 2-2, and the aperture of the first through holes 2-3 is 3-20 μm. .

Specifically, the upper section of the outer sleeve 2-2 is an annular sleeve, and the lower section is sintered metal.

On the basis of the above embodiment, as a further preference, all second through holes 1-4 are evenly arranged along the circumferential wall and axial direction of the inner sleeve 1-3, and the aperture of the second through holes 1-4 is 1-3 mm. .

That is to say, multiple rows of second through holes 1-4 are provided at axial intervals along the inner sleeve 1-3, and each row of second through holes 1-4 is provided at intervals along the circumferential side wall of the inner sleeve 1-3. .

On the basis of the above embodiment, as a further preference, in addition to the bridge sleeve assembly, it also includes a sealed cavity 2-1, communicating with the outer sleeve 2-2 at one end outside the storage tank, and sealingly connected with the inner sleeve 1-3, An inert gas is provided in the sealed cavity 2-1 to prevent powder from floating out.

Specifically, the sealing chamber 2-1 and the outer sleeve 2-2 are provided integrally, that is to say, the end of the outer sleeve 2-2 located outside the storage tank is the sealing chamber 2-1, and the size of the sealing chamber 2-1 Larger than the size of the outer sleeve 2-2, one end of the inner sleeve 1-3 penetrates into the sealing cavity 2-1 and the outer sleeve 2-2 in sequence, and connects the inner sleeve 1-3 and the sealing cavity 2-1 The connection is sealed, and at the same time, a sealing air inlet 2-4 is provided at one end of the sealing cavity 2-1 away from the storage tank. Inert gas is introduced into the sealing cavity 2-1 through the sealing air inlet 2-4, thereby achieving the effect of Sealing effect.

Furthermore, since the density of the inert gas is greater than the density of air, the pressure in the sealed cavity 2-1 is greater than the pressure in the storage tank. This pressure difference will tightly seal the powder in the storage tank to prevent the powder from leaking out. The body jumps into the sealed cavity 2-1.

Of course, the pressure difference between the sealing chamber 2-1 and the storage tank cannot be too large, otherwise it will affect the efficiency of bridge removal; it cannot be too small, otherwise the sealing effect will not be obvious, so as to maintain the internal pressure between the sealing chamber 2-1 and the storage tank. The difference is only 5-7KPa.

On the basis of the above embodiment, as a further preference, in addition to the bridge sleeve assembly, it also includes a driving member 1-2, connected to one end of the inner sleeve 1-3 extending out of the outer sleeve 2-2, for driving the inner sleeve 1 -3 moves along the outer sleeve 2-2.

In addition, the driving member 1-2 can also be coupled to a sensor to control the inner sleeve 1-3 to automatically move up and down, thereby realizing automatic bridge removal and improving the efficiency of bridge removal.

It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply the existence of any such relationship between these entities. Actual relationship or sequence.

The above provides a detailed introduction to what this application provides. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be noted that for those of ordinary skill in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims (8)

1. A bridge removal device for a storage tank, comprising:

the bridge removing sleeve assembly is arranged in the storage tank and can move along the axial direction of the storage tank;

the air inlet is arranged at one end of the bridge removing sleeve assembly;

the air inlet channel is arranged on the bridge removing sleeve assembly, one end of the air inlet is communicated with the air inlet, the other end of the air inlet is communicated with the storage tank, and when the bridge removing sleeve assembly moves along the axial direction of the storage tank, the air inlet channel is used for introducing gas into different height positions in the storage tank so as to loosen powder at the different height positions in the storage tank.

2. The bridge removal apparatus for a storage tank of claim 1, wherein the bridge removal sleeve assembly comprises:

one end of the outer sleeve is arranged in the storage tank, extends to the bottom of the storage tank along the axial direction of the storage tank, and is provided with a plurality of first through holes communicated with the storage tank;

one end of the inner sleeve is arranged in the outer sleeve and can move along the outer sleeve, the inner sleeve is provided with a plurality of second through holes communicated with the outer sleeve, and the first through holes, the second through holes and the inner side wall of the inner sleeve form the air inlet channel.

3. The bridge removal device for a storage tank of claim 2, wherein said air inlet is provided at an end of said inner sleeve located outside said storage tank.

4. The bridge removing device for a storage tank according to claim 2, wherein all the first through holes are uniformly formed in a first preset section of the outer sleeve, all the second through holes are uniformly formed in a second preset section at the bottom of the inner sleeve, and the inner sleeve drives the second preset section to move within the range of the first preset section.

5. The bridge removing device for a storage tank according to claim 4, wherein all the first through holes are uniformly provided along the circumferential wall and the axial direction of the outer sleeve, and the aperture of the first through holes is 3-20 μm.

6. The bridge removing device for a storage tank according to claim 4, wherein all the second through holes are uniformly provided along the circumferential wall and the axial direction of the inner sleeve, and the aperture of the second through holes is 1-3mm.

7. The bridge removal apparatus for a storage tank of any one of claims 2-6, wherein the bridge removal sleeve assembly further comprises:

the sealed cavity is communicated with one end of the outer sleeve outside the storage tank and is in sealing connection with the inner sleeve, and inert gas is arranged in the sealed cavity so as to prevent the powder from drifting out.

8. The bridge removal apparatus for a storage tank of any one of claims 2-6, wherein the bridge removal sleeve assembly further comprises:

and the driving piece is connected with one end of the inner sleeve extending out of the outer sleeve and is used for driving the inner sleeve to move along the outer sleeve.